JPS60178132A - Controller for elevator tray of duplicator - Google Patents

Abstract

PURPOSE:To eliminate a trouble to close a door and to improve operability, by a method wherein, when opening of the door of a duplicator body is detected, elevating driving of an elevator tray is prohibited, and meanwhile, lowering driving is rendered effective. CONSTITUTION:In a device wherein static trays 2 and 3 and an elevator tray 4 are vertically disposed to the interior of a duplicator body, when the elevator tray 4 is selected through control of a console 8, the tray 4 is raised through driving of an electromagnetic clutch 10 and a motor 11, and the tray 4 is brought to a stop at a point of time when a level detecting switch 12 is brought to an OFF-state. Thereafter, driving of a paper feed roll 7 causes feed of an uppermost paper on the tray 4 to perform duplication. In this case, when an output is produced from a paper absence detecting sensor 18, the tray 4 is lowered despite of motion of a door opening sensor 14 for detecting opening of a door for checking the interior, and is moved to a specified position to supply the papers.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an elevator tray control device for a copying machine that allows the elevator tray to move downward even while the door of the copying machine main body is open.

[Prior art]

The elevator tray system i of a conventional copying machine (as an I device,
For example, some machines are designed to stop the elevator tray from moving downward if the door of the copying machine body is opened during the downward movement to replenish copy paper.

However, with the conventional elevator tray control device of a copying machine, when the door is opened while the elevator tray is descending and the descent stops, the operator has to close the door again and wait for the descent to finish. Although these measures have been taken with safety in mind, they are less dangerous than the operation of other copying mechanisms or paper transport mechanisms. Safety can be ensured by the operator's attentiveness, and it is not practical to perform stop control.

[Object and structure of the invention]

The present invention has been made in view of the description of -F, and it does not make the operator feel bothered and speeds up the operation i=+
In order to improve efficiency, an elevator tray control device for a copying machine is proposed so that the elevator tray does not stop moving downward even when the door of the copying machine main body is opened.

〔Example〕

The elevator control device for a copying machine according to the present invention will be explained in detail below.

FIG. 1 shows an embodiment of the present invention, in which stationary trays 2 and 3 are disposed below a photoreceptor drum 1 disposed inside the main body, and an elevator tray 4 is provided below the stationary tray 3.
are disposed so as to be movable downward, and the paper on the top surface of each tray is fed out [paper feed rolls 5, 6, .
7 are arranged. Also, on the top side, the number of copies,
A console 8 is provided with operation buttons and a display for selecting a tray, setting a reduction ratio, and the like. The elevator tray 4 is locked to an elevator mechanism 9. The rotational force of the motor 11 is applied to the elevator + via the electromagnetic clutch 10.
By driving j+4'+#'', the elevator tray 4 is raised or lowered.

The control device includes a paper level detection switch 12 that is disposed above the elevator tray 4 and detects when the tray 4 is at the paper feeding position, and a paper level detection switch 12 that is rotatably supported below the switch and has one end attached to the paper level detection switch 12. A contact 13 (electrically grounded) that contacts the paper surface of the elevator tray 4 and activates the switch 12 when the other end falls below the proper paper feeding position, and a door for internal inspection ( A door open sensor 14 that operates in conjunction with the opening of the door (not shown);
A series of controls, elevator tray 4, and electromagnetic clutch for receiving output signals from various sensors such as the paper ejection sensor inside the main body, the paper level detection switch 12, and the console 8 as data at predetermined timing, and performing copying processing. Microcombi, which executes control for driving 9, - Control lB15 using Ichiyuki: 1ill n1
Part 11 15.1: Reoutput Sttt le flilH111
Ti? +) 1 magnetic clutch 9, drive 1iIJ based on the order
a drive circuit 16 that drives the motor 11 based on a control command output from the control unit 15;
It is comprised of a paper-out detection sensor 18 that detects when the reed contact 7'13 comes into contact with and detects that there is no paper stored therein.

The control unit 15 includes a console 8, a paper level detector 111,
The switch 12, the paper out detection sensor 18, and the output No. 3 from the various hinges are received at the bus 1 at a predetermined timing.
Input interface 1 that outputs digital signals to 5f
5a, and a ROM 15b storing a control program for driving and stopping the copying mechanism according to a predetermined procedure and for moving the elevator tray 4 to a predetermined position.
A CPU 15 c that executes various processes according to the programs in the ROM 15 b, and an R1Δ that temporarily stores processing results by the CPU 15 c and data from the outside.
M15d, and an output interface 15e that outputs control commands generated in accordance with execution of processing by the CPU 15c to drive circuits 16, 17, and other drive units of the copying mechanism.

In the above configuration, to explain 4th production based on the flowchart in Fig. 2, Konnor 8 selects one tray type depending on the paper size, and also sets the reduction ratio and number of copies (at the same time as settings). When the size (displayed on the display) etc. is set, the control unit 15 displays the size on the platen according to the reduction ratio and sets the selected tray.

When the elevator tray 4 is selected, the control unit 15
A control command is issued to the drive circuits 16 and 17, the electromagnetic clutch 10 and motor IJ are driven, the elevator tray 4 rises, and when the paper level detection switch J2 is turned off, the magnetic clutch, clutch 10, and motor are turned off. Turn off 11,
Stop the elevator tray 4.

Next, when the start button to start copying is pressed, the control unit 15 checks whether a detection signal is generated by the paper out detection sensor 18 □.

Then flJ is determined. If the detection signal is not generated, it is assumed that the paper is present in the elevator tray 4, and the result is 1 - inspection + 1! + (not shown) to scan the original placed on the platen, expose the photoreceptor 1, and develop it. At the same time as the developing surface reaches the transfer position, the paper feed roll 7'r: ! ! t< +It
b J, , one sheet of paper on the top surface of the elevator tray 4 is conveyed to the transfer position via the conveyance system, and the sheet after the transfer is fixed and then sent to the discharge tray.

, ) j s paper (llr, A detection signal is generated from the L detection sensor 18. In the table, l'l' is used to drive the magnetic clutch lO, and the motor 11 is turned in the opposite direction to the above case. Rotate and remove elevator tray 4 from the machine 113
, +J- lower to IK. When the descent is completed, the door of the main body is opened, the elevator tray 4 is pulled out, and the required number of copy sheets is stored. After that, move the elevator tray 4 to the normal position 11't inside the main body, close the door, and move the elevator tray 4 again to 151!
By selecting, the paper is moved up to the paper feed position t#.

FIG. 3 is a flowchart showing an example of the process of the present invention, and the same process as shown in FIG. 2 will not be described repeatedly. When lowering the door, the lowering operation is continued regardless of the operation of the door open sensor 14, and the door is moved to a home position.

With the above configuration, even if the operator opens the door without waiting for the elevator tray 4 to finish descending, the descending continues without stopping, eliminating the need to close the door as in the past, and reducing the hassle. It will be resolved. The operator makes sure that the elevator tray 4 is set in the normal position, pulls it out, stores the required number of sheets, pushes the elevator tray 4 in again, and operates the tray selection button on the console 8 to move the elevator tray. If you choose,
The elevator tray 4 rises to the paper feeding position R. This allows copy processing to be performed at any time.

〔Effect of the invention〕

According to the elevator tray control device 6 of the copying machine of the present invention, the elevator tray continues to descend regardless of whether the door is opened or closed.
Even if the elevator tray is opened, the lowering operation of the elevator tray is canceled, and the hassle of closing the door is eliminated and wasted time can be reduced.

[Brief explanation of drawings]

, Figure 111 is a 411N diagram showing a conventional elevator tray control device, Figure 2 is a flowchart showing a conventional copying machine mechanism/beta tray control processing example, and Figure 3 is an example of an implementation of the present invention. Flowchart showing an example. Explanation of symbols 2.3...D, 11-tray, 4...elevator tray, 5.6.7...paper feed roll, 8...console, 9...elevator mechanism, 10... ·clutch,
DESCRIPTION OF SYMBOLS 11... Motor, 12... Paper level detection switch, 13... Contact, 14... Door open sensor, 15...
-Control unit, 16.17... Drive circuit, 18... Paper out detection sensor. Patent Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Nobuyuki Matsuhara Patent Attorney Seiji Muraki Agent Patent Attorney Taira 1) Tadao Agent Patent Attorney Atsushi Ueshima − Agent Patent Attorney Hitoshi Suzuki Figure 1 8 1 person Q 1 C Figure 2

Claims (1)

[Scope of Claims] A copying machine equipped with an elevator tray that feeds a large number of copy sheets based on the raising and lowering of the sheet loading surface. control means for raising the sheet loading surface and lowering the paper loading surface by driving the lifting means when replenishing copy paper; An elevator tray control device for a copying machine, characterized in that it allows a descending drive even if it prohibits an upward drive of a placing surface.